Author
Topic: Cb750 fresh build dark oil (Read 417 times)

The only thing I've done since the rebuild is turn the bike over and let it idle the bike has yet to be ridden and this is what the oil is looking like. It's bored out to 811, It doesn't smell like fuel has and doesn't seem metallic at all. Is this normal and I'm over thinking running penzoil 10w 40 for now it?

Mine comes out darker than that after a single 1/4 mile run. Run it some more and see how it looks after a few hundred miles. Typically oil comes out almost black after a few thousand miles. Some of that is carbon, some is clutch plates and some is from parts slowly wearing and mating.

Mine comes out darker than that after a single 1/4 mile run. Run it some more and see how it looks after a few hundred miles. Typically oil comes out almost black after a few thousand miles. Some of that is carbon, some is clutch plates and some is from parts slowly wearing and mating.